The LPC1343 Code Base was recently updated with a number of important bug fixes, mostly notably USB CDC is now much faster than in previous releases. A number of new drivers have been added including the TAOS TCS3414 RGB sensor, the TAOS TSR2516 luminosity (Mixed and Infrared) sensor, and a very preliminary/experimental driver for the PN532 (13.56MHz RFID/NFC), though the latter is of limited use in it's present form. See the complete changelog for more information.
A small update was also made to the lpc134x.h system header file to allow access to the DWT registers for in-code performance testing and benchmarking. DWT (Data Watchpoint and Trace Unit) is an optional block for the ARM Cortex M3 that is included in the LPC1343 and allows you, amongst other things, to count the number of clock cycles that have elapsed between two points. This can be very useful for measuring system performance in complex situations where you have a number of background interrupts that may delay a critical function, etc. By using DWT and the cycle counter, you can determine with reasonable precision the average time that a function or chunk of code will take including any overhead from ISRs and interrupts. For a quick overview of using DWT and the cycle counter, have a look at our new tutorial: Benchmarking the LPC1343 in code using DWT.