Welcome to the CME Globex Notices for the week of June 25, 2007.

Critical System Updates

• Legacy Certification Environment Decommission - This Week!
• New! Display Conversion Factor Update

Product Changes

• NYMEX Financially Settled Energy Futures Delisting on CME Globex - This Week!
• Extended Listings for NYMEX Uranium Futures on CME Globex - This Week!
• New! Spread Change for CME Commodities - 7.15.07
• CME Eurodollar Extension - 7.15.07
• New! Maximum Order Quantity Increase for CME Eurodollar Futures - 7.22.07
• Update! Instrument Group Code Changes for CME Globex - 7.29.07

Events and Announcements

• New! CME Globex Fourth of July Holiday Schedule
• Proposed CBOT Merger Client Impact Assessment

If you have any questions or concerns, please contact your CME Globex Account Manager at 312.634.8700; +44.20.7796.7100 in Europe; or at +852.3101.7696 in Asia.

Critical System Updates  

Legacy CME Certification Environment Decommission  
Effective July 1, 2007, CME is decommissioning the legacy CME certification environment. The new certification environments, launched earlier this year, provide greater flexibility and functionality for developing, testing and certifying customer applications. More information on the new certification environments is available at www.cme.com/cert.

To connect to the new Certification and New Release environments, customers must obtain new connections and IDs. New IDs for the legacy CME certification environment are no longer available.

Any customers currently connected to the legacy CME certification environment will need to migrate to the new environments before the July 1 cut-off. Please contact your CME Globex Account Manager for more information on the migration.

New! Display Conversion Factor Update  
CME is currently developing Display Conversion Factor, position 878 in the Instrument Creation (MO (m-oh)) RLC market data message, to define the price conversion factor for every instrument on CME Globex. During development, values in this field may change. Customers with any concerns are encouraged to contact their CME Globex Account Manager for a list of the impacted instruments. The launch of the Display Conversion Factor field will be announced in these Notices.

Product Changes  

NYMEX Financially Settled Energy Futures Delisting on CME Globex  
Effective Friday, June 29, 2007 (for trade date Monday, July 2), NYMEX is delisting the following financially settled energy products, including spreads, on CME Globex.

Extended Listings for NYMEX Uranium Futures on CME Globex  
Effective Sunday, July 1, 2007 (for trade date Monday, July 2), the NYMEX Uranium futures contracts on CME Globex will be extended from the currently listed 36 months to 60 months.

Spread Change for CME Commodities  
Effective Sunday, July 15, 2007 (for trade date Monday, July 16), at customers' request, CME is changing the configuration of the CME Commodities 3-Way Call future spreads. 3-Way spreads are listed on CME Globex for the CME Live Cattle and CME Lean Hog futures.

The new leg configuration will be:

• Leg 1 - Buy Call at strike price
• Leg 2 - Sell Call at higher strike price
• Leg 3 - Sell Put at lower strike price

Currently, the 3-Way Call future spread is configured:

• Leg 1 - Buy Call at strike price
• Leg 2 - Sell Put at lower strike price
• Leg 3 - Sell Call at higher strike price

These spreads with the new leg configuration will be available in New Release for customer testing after the maintenance window on Wednesday, July 11.

CME Eurodollar Extension  
Effective Sunday, July 15, 2007 (for trade date Monday, July 16), implied functionality will be extended out through the first ten years (40 contract months) for CME Eurodollar futures and future spreads. With this launch, CME is also launching implied butterfly and calendar futures spreads for the second five years. Implied butterfly and calendar futures spreads for the first five years are already available on the CME Globex platform.

The additional butterfly and calendar spreads and implied functionality are currently available in New Release for customer testing.

Maximum Order Quantity Increase for CME Eurodollar Futures  
At customer requests, effective Sunday, July 22, 2007 (for trade date Monday, July 23), the Maximum Order Quantity for the first two years of CME Eurodollar futures and spreads is increasing to 30,000. Currently, the Maximum Order Quantity is set to 20,000 for the first two years.

The Maximum Order Quantity for every instrument on CME Globex is defined in the Instrument Creation (MO (m-oh)) RLC market data message, position 533, Order Max Qty.

Instrument Group Code Changes for CME Globex  
To prepare for upcoming product launches, the existing Instrument Group Codes for the following products will be changed. The Instrument Group Code can be found in the Instrument Creation (MO) message at position 70-71. This change will be effective in all customer environments (Production, Certification and New Release) Sunday, July 29, 2007.

New Instrument Group Codes may require front-end system or trading application changes. Please contact your system provider for more information.

Events and Announcements  

CME Globex Fourth of July Holiday Schedule  
The Fourth of July Holiday schedule for the CME Globex platform is now available online.

Proposed CBOT Merger Client Impact Assessment  
CME previously announced that it intends to migrate e-cbot products to CME Globex in a phased approach beginning Q1 2008, subject to completion of the CME-CBOT merger, which is expected to occur mid-2007, pending approvals by regulators, shareholders of both companies and CBOT members, as well as completion of customary closing conditions. In an effort to provide information as early as possible regarding this electronic trading migration, the CME/CBOT Client Impact Assessment document is now available for your reference at www.cme.com/CBOTImpact. Key topics discussed in this document are as follows:

1. Key Dates and Events
2. CME Globex System Impacts
   • Product-Specific Functionality
   • Fractional and Cabinet Pricing
   • Implied Spread Functionality
   • Matching Algorithms
   • Market Data Messages and Channels
   • Testing and Certification
3. Bandwidth Recommendations
4. Messaging Policy Implications
5. User Identification

For more information about this client impact document, please contact CME Globex Account Management or via phone at 312.634.8700 or at +44.20.7796.7100 in Europe.