Rumors that Amazon will be soon launching a tablet PC have been somewhat vindicated by a recent posting on the Taiwan based tech news site Digitimes.

According to Digitimes, Amazon is planning on launching their line of Tablet PCs as soon as August-September. The bookseller plans to sell four million units globally during 2011, with monthly shipments being in the 700,000 to 800,000 range.

Amazon has yet to release official information about their planned tablet, aside from a “stay tuned” comment by CEO Jeff Bezos delivered in an interview in May.

Rumors regarding the technical details of Amazon’s yet to be unnamed tablet PC have begun to conflict. The Digitimes piece says that Amazon will be using ARM processors from Texas Instruments; touch panels from WinTek, and LCD drivers by ILI technology.

However, various reliable tipsters, independent of each other, said last month that Amazon was planning to launch their tablet in two tiers: a lower end dual core model powered by NVIDIA’s Tegra 2 platform and a higher end model that is powered by NVIDIA’s quad core Kal-El platform.

Despite Amazon’s ambiguity about this upcoming tablet’s details, their CEO has been quite clear that when the company does release a tablet it will not so much supplant the Kindle as supplement it.