Remember that little GT-P7510 project Samsung seems to have on the backburner? You know, the ultraslim Tegra 2 tablet that makes Honeycomb finally feel ready for public consumption? Yeah, well, that's gotten its pre-order papers now, courtesy of J&R. Pricing of the WiFi-only Galaxy Tab 10.1 matches the $500 for 16GB and $600 for 32GB that Samsung announced in March, and though delivery dates aren't listed, we'll go