Wednesday, October 20th, Apple will be holding their “Back to the Mac” press event. As usual, the event begins at 10:00 a.m. PDT, 1:00 EDT. Officially, we don’t much about the event. The invitation hints at the next version of Mac OS X—Lion—but the rest is all just rumor and speculation. You can join us right here as we live blog the event. In the meantime, here’s a quick roundup of the rumors we’ve heard so far…

“Back to the Mac,” says Apple in their latest invitation for a press event. Considering the slogan and the fact that the image shows an Apple revealing a lion, it’s pretty safe to guess this event will be about the next version of Mac OS X: Lion. The press event will be held on Wednesday, October 20th. It’ll be nice to see Apple focusing on the Mac again rather than iOS. Regardless of the way mobile is moving, Mac OS X still remains a prominent part of people’s lives.

Rumor has it that new MacBooks are expedcted to be unveiled on October 14th (yes, that’s an Apple Tuesday). Seth Weintraub of Computerworld noted that a re-design of the MacBook Pro is needed, and he took some educated guesses as to what the next-gen MacBook Pros may look like…

At yesterday’s Let’s Rock event, the focus was, as expected, 100% music. There was some hope that Steve would pull one of his famous “One more thing…” speeches and whip out a couple of new MacBooks, MacBook Airs, and MacBook pros. There were also more rumors that said notebooks would half to wait until closer to the holiday season, and recent reports show that this rumor may come to fruition.

According to Daring Fireball’s John Gruber, an insider at Apple has informed him of an event that has been scheduled for Tuesday, October 14th.

Details after the break.