Are there any updates on the ability to allow comma/thousand separators to be added to tables?

Are there any updates on the ability to allow comma/thousand separators to be added to tables?  

You can use the Mask Input widget for that purpose: https://widgets.jotform.com/widget/masked_input 

If you need to add it to your existing form, please check this guide: https://www.jotform.com/help/252-How-to-Add-a-Widget-to-Your-Form 

If you were actually referring to add that functionality into the input fields from the Input Table:

Unfortunately, that is not possible. We could forward a request on your behalf to our back-end team, if you want to.