Hi,
I have seen them on cypress, they look promising, a dual core Cortex M, like LPC43XX or LPC54XX from NXP with the added BLE or Wifi connectivity, more ram and flash and CPU clock than Nordic parts, the question for now is how they are priced? and what tools and library do they support for the RF parts, and the Possibility to work directly in Keil is a must for success. Do they support Mesh networks? it's a big question for them.