From the UC500 series EOL announcement:
Is there a migration plan for UC300, UC500 and BE 3000 customers? And will my existing SPA phones be included in the plan?
Planned for availability on August 1, existing customers on the UC300, UC500, and BE 3000 platforms will be able to migrate to the BE 6000 via the SMB Collaboration migration program. Support for migrating SPA phones to Cisco Unified IP Phones is also be included in the program.
Could someone post a link to this program? I can't find any details about it here or on Cisco's partner site. Thanks!