It looks vaguely like a scaled down LS (as some have rumoured the new ES would look).
I don't know that it would be "real stupid" to buy a 2001 ES if you got one very heavily discounted. The new ES will probably be very hard to get in the first few months. This will mean they will be selling for sticker price. The price difference between a 2001 near invoice (or maybe below in some places) and a 2002 at full sticker will be significant.
I have heard you can get a 36 month/15K mi lease on 2001 ES with the Lexus Value Package for below $500 per month with zero cap reduction until April 30th if you lease through Lexus Financial.
So far, the only major differences other than new cosmetic styling and minimal power increase are, 5 speed automatic, optional navigation system and optional Mark L stereo as opposed to optional Nakamichi.
Buyers who choose not to order the navigation system are getting little of significance that they can't get on a 2001.