Can you believe it's almost been a year since the Nook was announced? The reader was first shown to the public on October 20th last year, and started shipping to the public in limited quantities in December. We don't know if Barnes & Noble is planning a follow-up just yet, but this mysterious invite we just got in the ol' email inbox might hint at such an occasion. Last year's event in NY was at a much larger venue, while this year B&N is hoping to cram people into its Union Square store in the area it typically hosts authors for book readings -- that could be a hint at something less impressive, or maybe they just wanted to cu
