So here's the official discussion board for Ben 10: Time's End. Assuming it even happens.
In case you're too lazy to just click that link, here's the plot of it:
"Not long after the events of the finale of Ben 10: Omniverse, Ben and his team set out on their road trip through the universe. However, it seems that there was a permanent effect from Maltruant's meddling with time and the universe, as some things have... changed. Although Maltruant was defeated, the Time War seems to be raging on, causing temporal shifts in the universe. While some changes are welcomed, the group of heroes must set right what was damaged through time, while also checking out the wonders of existence along the way."
In case you couldn't tell from that (or the trivia on the page, but I assume that you didn't even go there if you read the plot on here) the series is a soft-reboot because timey wimey. Technically everything is still canon to some extent but it's also not. If that makes any sense. I hope it does. If you have any questions about the series feel free to ask below.
Also here's some series art.