HummerBob
Meanwhile,a number of sources indicated that Cingular Wireless is intensely interested in the 3.5G technology, HSPDA, which promises data downlink speeds approaching 10Mpbs. The technology is compatible with the EDGE standard, currently being utilized by Cingular, AT&T Wireless and T-Mobile.
"I would not doubt Cingular tip-toes right past WCDMA Rel99 if they feel HSPDA will be available in a reasonable timeframe, say 06-07.
1st - HSDPA is NOT compatible with EDGE
2nd - read Eric's post
3rd - ignore Rob's post. HSDPA as a part of UMTS is licensed by Qualcomm. HSDPA will not be stand alone (but used in conjunction with FDD and TDD) and even still, Qualcomm has contributed to HSDPA.
Later