Mine arrived 3 days ago 
Good news is that Slate Plus has thermal sensors built in but no fan, the firmware comes with v.4.0 alpha2 that is kernel 5.4 inside.
Initial Wi-Fi performance testing is not as expected, I don’t know if it’s the firmware or hardware issue. 
The size compares with a baller pen:
The size compares with Slate AX:1
The size compares with Slate AX:2
The size compares with Slate AX:3
** The size compares with Slate AX: 4**
** The size compares with Slate AX: 5**
** 5V/3A Power Adapter **
