It’s called the Galaxy Player S Wifi 4.2, so its name should be a dead giveaway that it’s slightly larger than the 4.0 and slightly smaller than the 5.0. Also, it’s white/grey-ish instead of black.
Other than that, there really aren’t any big differences to spot between the various models. They all have the same 800 x 480 resolution (in an IPS variety on the 4.2, contrary to Samsung’s usual AMOLED screens), same 1 GHz processor speed, same Android 2.3 operating system, same codec support, same connectivity options, and so on. The new 4.2 still seems to lack HDMI output – an issue users have criticized as one of the biggest shortcomings of the 4.0 and 5.0, and a major drawback of an otherwise nicely specced PMP.
The 4.2 comes with 8 or 16 GB of internal memory, and of course a MicroSD slot to add some more. Its battery holds 1500 mAh, so let the speculations about its run time begin. No release date or street price have been announced yet.
Oh yeah, before I forget it – the 4.2 comes preloaded with some random game. This seems to be a big enough deal to mention it in the specs sheet of the press release.