Duolingo is not going to be updating it's Welsh course any more.

Clozemaster will be adding a new collection of 10,000 additional Welsh sentences in the near future.

I know Clozemaster isn't very useful for total beginners at a language, but the 'explain' feature does mean you can work out what each word in a sentence means both as a word, and as part of the sentence structure.

And I know some of you love your Welsh..

I've decided I prefer the 500 most common words collection to the Fast Fluency.  The most common words collections have several examples of each word, and I find that gives me a better understanding of it's meaning.