According to CNET.com, a fix is now available for problematic left Joy-Con controllers. The process involves simply contacting Nintendo and sending the faulty Switch controller in for repair.

Undoubtedly, this comes as welcome news for people who've fallen victim to the problems and good news for Nintendo as the Joy-Con de-sync fault was a particular point of discussion which threatened to put a sour note on what has otherwise been a successful launch for Nintendo's latest console. Despite a number of YouTubers offering up their own solutiuons to fix a faulty Joy-Con, we would advise anyone who has experienced any problems to follow the official channels and contact Nintendo directly so as not to invalidate their console's warrenty.

Gamers will be well aware of the bizzare statement released by Nintendo not so long ago which advised them not to use their Nintendo Switch console in close proximity to aquariums or mobile phones in an effort to combat the connectivity issues found in the new hardware. In Autumn of this year Nintendo is expected to release their paid online service which includes a mobile app used for arranging in-game meet-ups and voice chat. How this would have worked given the known Joy-Con issue puzzled and annoyed many gamers who had experienced the problem as this seemed to be a band-aid as opposed to a real fix.

I have not experienced any issues personally, but a few members of our forum have. Even so, Nintendo have made a point that the number of issues people have contacted them with regarding the Switch is no more than at previous console launches. 

For a more in-depth technical rundown of the issues, head over to CNET's original article.

UK users who have experinced Joy-Con issues, you can see an overview of the problems and can contact Nintendo UK directly from here.

Turnaround for resolving the issue is believed to be 3-7 days.

Update: Kotaku is reporting that Nintendo has commented on the Joy-Con issue, citing a "manufacturing variation" which has unfortunately affected a small number of launch batches. The problems have now been solved and going forward this issue is not expected to arise again in production. Nintendo is still advising consumers affected by the issue to send their Joy-Con in for repair.