The government has confirmed that it will dig the HS2 tunnels from Old Oak Common to Euston station, although it hasn't proposed any new plans to build Euston station itself.
Previous government intended to cancel the leg to Euston despite all the work already being done to save money, but hadn't confirmed.
It made little sense because they'd already spent a lot of money to build a good amount of it and would've made all of it a waste.
Not to mention, having a high speed line terminate further than the main line it's meant to take pressure from would've defeated made the line effectively useless.