It looks like the foundation have just released the Raspberry Pi Model 2 with 3x performance on a single core and 6x performance on multi-cores.
http://www.theregister.co.uk/2015/02/02/raspberry_pi_model_2…
It doesn't look to be available in Australia yet (have checked both local RS-Online and Element 14 websites), but it is available overseas.
The price will be the same as the current B+ (it's unfortunate the AUD is in a bad way).
edit: It's available now via RS-Online - http://au.rs-online.com/web/p/processor-microcontroller-deve…
Awesome, now have to decide whether it is worthwhile to replace all my Raspberry Pi B with this one.