If all goes well, 02_03_10 will be the new ALPHA release tomorrow. It uses the latest ESP8266/arduino core and seems to have a lot of improvements to LwIP. Heap issues are minimal now and in fact this core increases available heap significantly. Seems very stable, we’ll see how it goes in ALPHA.
Update: 02_03_10 is the ALPHA update as of today July 26 at 10:20am.