UPDATED: iOS 4.3 coming today? 3-device personal hotspot limit up to carriers?

BGR is hearing from their sources that Apple might just release iOS 4.3 as early as today. Apple previously announced they'd be releasing iOS 4.3 on Friday alongside iPad 2 so take it with a Cupertino-sized grain of salt, however Apple has staggered release days previously to avoid everyone hitting their servers all at once. If it does come today expect the usual 10am PT/1pm ET start time.
Also, BGR says the reason many GSM carriers like AT&T will have a 3-device personal hotspot limit -- as opposed to the Verizon iPhone's 5-device limit -- is that the default is 3 but Apple will raise it to 5 at a carrier's request. Guess most haven't requested that...
Anyone going to be checking for updates today, or do you think we'll have to wait for Friday?
UPDATE: The Loop
[BGR]
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Rene Ritchie is one of the most respected Apple analysts in the business, reaching a combined audience of over 40 million readers a month. His YouTube channel, Vector, has over 90 thousand subscribers and 14 million views and his podcasts, including Debug, have been downloaded over 20 million times. He also regularly co-hosts MacBreak Weekly for the TWiT network and co-hosted CES Live! and Talk Mobile. Based in Montreal, Rene is a former director of product marketing, web developer, and graphic designer. He's authored several books and appeared on numerous television and radio segments to discuss Apple and the technology industry. When not working, he likes to cook, grapple, and spend time with his friends and family.