Amazon-TRU.com doesn't exactly have a good track record on listing actual stock status of an item these days. The second wave of Unleashed has been listed as being "In Stock-Ships in 2 to 3 Days" on several occasions since early April, but they never had them until just recently.
They also seem to apply release dates to things fairly arbitrarily when it comes to Star Wars toys, and with this being a holiday weekend (meaning no operations on Monday) in the US, they could say 2 to 3 days to ship, and even if they had them in stock (anything other than the Anakin-Vader set I doubt they actually have), it would be Wednesday of next week, if not later, before they were sent out.
Amazon's really falling off in terms of keeping accounts updated. I had ordered a Nine Inch Nails CD about two months in advance, since it was a limited edition import, and I got the email saying the release date had changed. Then, I checked the site and it was listed as "In Stock: Ships Within 24 Hours." So, I wrote them a letter asking why something I had ordered two months ago and waited on was being denied to me but offered for general sale on the site, and they apologized profusely, upgraded to next day shipping, and the following day by 12 noon I had that CD in my hands.
The Unleashed figures are still listed in my account as shipping between June 10 and June 24, despite my having received an email authorizing a delay on their (third) release date. Beth (jadesfire) has already received her UL Vader from that wave from Amazon, but neither of the other two figures and no explanation as to when they'll be coming, so I don't know what Amazon is up to right now.
So, uh, long story short, I'd only order what you think you might not be able to find at retail, and if they don't stick to the "2 to 3 day" shipping thing, call them on it.