Back in 2011, we started following the progress of Raspberry Pi’s $25 desktop PC. The model B officially arrived in early 2012, with the Model A arriving in 2013. Now the tiny little desktop PC manufacturer has taken the next step forward with the Model B+. The latest model doubles the number of USB ports, combines audio and video into a single port, adds another 14 pins to the motherboard, and features a microSD card reader. Unfortunately, the new model will probably not fit in the existing cases. Fortunately, the $35 price tag did not change.
Raspberry Pi Model B+ Arrives
Published: 07/14/2014Posted in: HW
About the Author
KALE: A geek who works in the IT Security field and lives in Dallas, TX. He is also a music geek who has played in several local bands. Previous to his IT career, Kale worked as a photojournalist. He brings technical advice and artistic counterpoint to the podcast. 
It looks like the Raspberry Pi 2 is on track for a 2017 release.
http://www.extremetech.com/computing/186263-raspberry-pi-2-targeted-for-2017-current-model-gets-upgrade