As Apple opens the flood gate on pre-orders for early iPad adaptors, new iPad tidbits emerges and questions answered.

New Button on the iPad: Screen Orientation Lock

Apple has exchanged what used to be the mute button on the iPad to a new button called “Screen Orientation Lock”. So you can lock the iPad screen in either portrait or landscape mode.

Apple Submits iPad to the FCC

Like with most of Apple’s FCC fillings, FCC revealed nothing on the iPad before the pre-orders started yesterday.

FCC (1),(2)

Model A1337 or also known as the iPad was tested by FCC and spotted to carry WiFi 802.11a/b/g/n and Bluetooth and the 3G Models will run on AT&T, GSM 850/1900 and UMTS 850/1900.

3G iPads are slightly larger

We know that the 3G version of iPad is 0.1 pound heavier than the WiFi-only iPad, but Interestingly enough, the FCC filling reveals that the 3G iPad is also 0.3mm taller and 0.1mm wider.

iPad AppleCare Protection Plan

AppleCare for their iPad protection plan extends only to 2 years like the iPhone and iPod.

Limited iPad pre-orders and pickup time

Apple has limited iPad pre-orders to 2 per customer. Customers can pick up their iPad at 9 am to 3 pm on April 3rd.

iBooks Synchronization

iBooks will be able to sync non-DRM ePub titles from iTunes.