Is it possible to have tabs in the new windows 10 bash terminal?

ConEmu can run various shells, including Bash on Ubuntu on Windows and supports tabs (among many other niceties).

I am using the terminator to use the windows 10 bash. You just need to install the Xming and the terminator with apt-get

https://sourceforge.net/projects/xming/

I'm using Hyper, which has tabs. To use with WSL (bash) you need to edit the preferences file:

shell: 'C:\\Windows\\System32\\bash.exe'