For the past couple of weeks (since shortly before the Lion introduction, I believe) Apple's professional training and certification site at training.apple.com has been under renovation. Today it's back with a new Lion-esque look and previews of new training courses and certifications for Apple-centric IT professionals.
The three new tracks/certs are for Lion (no surprise), Final Cut Pro X and Mac Integration Basics 10.7. None of the certification exams for those tracks are ready yet, nor are most of the course materials -- only the MIB class has full documentation available right now. Lion certification testing is due to start up in the fall, and FCP X certifications are "coming soon."
The Snow Leopard 10.6 certification courses/testing suite is still available, and according to Apple's internal sales web site it will remain on offer until January 2012. Snow Leopard certification will not expire when the Lion exams come online, so if you get certified now you're still considered up to date well into 2012.