is this the most upto date sdk?

[MDHMatt]

as the title is there a new version anywhere as your docs send me here?

[pmphillips]

It is, and it should be updated to make it compatible with PHP 8 if it's not already. The API implementation is rather simple, but I've made a task so that we can review the SDK and make any necessary changes. If you are looking at the SDK in terms of payment gateway examples, it would be better to use the "Extension Generator" to generate an installable payment gateway with built in doc-comments that can be completed.