As you've not mentioned about the targeted OS, I'm assuming it as Windows.
On Windows (7/8/10):
HD 8600M is supported by the latest Crimson 16.8.2 driver ( Desktop ).
Whereas, HD 8610G (or any 8000 D/G variants) has been moved under the legacy product-list and is supported by Catalyst 15.7.1 (Legacy ). However, a Crimson 16.2.1 Beta is available ("as is" form) but no update will be supported with future updates.
P.S. You've been whitelisted so, now onwards you will be able to post anywhere in Devguru.