As Apple announced on stage at the event yesterday, Yosemite is now available on the App Store as a free upgrade to users of Mavericks and Mountain Lion. I’ve been using Yosemite on my secondary Mac for the past few months and it’s a solid release with a lot of welcomed changes and improvements.
If you plan on upgrading today I’d suggest making a fresh backup before hitting the update button. I’d personally recommend SuperDuper! for these types of situations, but a Time Machine backup should suffice.
I plan on waiting a month or two before upgrading, though. Yosemite has been very stable on the 2008 iMac I’ve been running it on. But, I’d rather wait for Apple to fix the bugs that everyone else finds than be one of the users finding them. As Aaron Mahnke astutely put it on Twitter:
Yesterday, Apple announced that I will be installing Yosemite on January 16, 2015.
I’m not sure I’ll wait quite that long, but Aaron has the right idea. I’ll probably end up upgrading during the last week of December when my day job slows down a bit.