Chalk up another one to join the tablet frenzy sparked off by the runaway success of the iPad.

Tablets are going to be big this year. At least, so hopes Best Buy, which will be making slates a focus this holiday season, according to an interview with Forbes. We don’t know all that much about which tablets will actually make it to store shelves in time for the holiday rush, but SlashGear has unearthed some details about a couple of ViewSonic slates set to debut two weeks from now at the IFA trade show in Germany.

Features

• The first device will be a 7″ affair with dual cameras,
• a USB port,
• and a microSD card slot.
• This model will also be graced with Bluetooth,
• Wi-Fi, and 3G connectivity,
• and it will run Google’s Android OS.

A larger tablet with a 10″ screen is also, ahem, slated to be unveiled at the show. Few details are known about this variant, but it will reportedly dual-boot Android and an “unspecified Microsoft OS.”

SlashGear speculates that the secondary OS could very well be Windows Embedded Compact 7, which is coming to Asus’ Eee Pad EP1010TC early next year. Dual-booting two tablet-centric operating systems seems a little odd, though. With a larger form factor, ViewSonic’s 10″ slate could very well pack the hardware necessary to run a full-blown version of Windows 7, a la asus 12″ tablet.

Get more on the latest updates, announcements and news from Microsoft, Google and Apple by following updates on our new twitter or facebook page.