Yeah we really have no idea, and even if 1.0.1 is real and does unroot, we don't know if it's possible to re-root using a different method.
Honestly, nobody can tell you one way or the other. Risk it, and hope the next release gets rooted (as most usually are) or get something more generic, like bestbuy certificates and buy it from there instead.
That way, if it is made un-rootable, you can still get something besides books.
HTC EVO 4G LTE - Stock
Samsung Galaxy Nexus - Stock
Motorola Xoom - Verizon - Rooted
HTC EVO 4G - Rooted
HTC Hero - Rooted
HTC T-Mobile G1 - Rooted