The Raspberry Pi, a tiny computer for hobbyists and developers, has been generally unchanged in the two-plus years since it launched, but on Monday a new piece of hardware went on sale. The updated "B+" model has the same Broadcom BCM2835 processor as the original and still has 512MB RAM, but it uses less power, has more connectivity options, and features other upgrades over the previous Raspberry Pi Model B. "This isn’t a 'Raspberry Pi 2' but rather the final evolution of the original Raspberry Pi," Upton wrote. The B+ will be sold through Element 14 and RS Components. It still uses a 5V Micro-USB power supply, but because of improved power management, Element 14 says you'll be able to "manage more devices from your Pi." The original Model B was previously upgraded a few months after launch, doubling its RAM from 256MB to 512MB.