Source: http://www.engadget.com/2013/06/03/samsung-galaxy-tab-3/
In addition to the Galaxy Tab 3 with a 7-inch display we've known about for a while, Samsung's announced the slate will come in 8- and 10.1-inch varieties, too -- something rumors and FCC filings have long suggested. The 8-inch model has a TFT display sporting a 1,280 x 800 (WXGA) resolution (189 ppi), a 5-megapixel rear camera and 1.3-megapixel front-facing shooter. It's got vaguely respectable internals: a 1.5GHz dual-core processor (no word on the manufacturer), 1.5GB of RAM and 16 or 32GB storage configurations. A microSD slot is present, supporting up to 64GB cards, and a 4,450mAh battery provides the necessary juice. Android 4.2 is OS of choice -- no surprise there -- and when it arrives, you'll have the choice of WiFi-only (dual-band, a/b/g/n), 3G (HSPA+) and LTE variants.
The 10.1-inch version stretches that same WXGA resolution across its display (149 ppi), and carries a smaller 3-megapixel rear camera and the same 1.3-megapixel front-facer. According to Reuters, the 1.6GHz dual-core CPU in this larger slate is provided by Intel, confirming a previous rumor. Unfortunately, it's saddled with only one gig of RAM, and the storage options are the same as the 8-inch model, with a microSD slot also supporting up to 64GB cards. Also running Android 4.2, the 10.1-inch Tab 3 packs a 6,800mAh battery, and comes in WiFi-only, 3G and LTE variants. Both tablets will be available worldwide at the "beginning of June."