As mentioned by Aggiornamenti Lumia, it’s worth noting that we’re not entirely sure whether this is a bug, glitch in the matrix or if WhatsApp has indeed allowed for anyone and everyone to try out the beta. All you need to do is hit the link below to get started. On the program? Sound off in the comments!
As the technological equivalent of gatecrashing a closed party, you’re now able to get into the WhatsApp beta without having an invitation. Those who access the listing on the Windows Store will see the option to download the beta app, providing those who opt to do so the ability to check out what’s on the horizon for the live release.
Source : Windows Central