There is no information available on if or when this will be updated.
As stated above, I would advise reaching out to TDA directly if you have further questions about updates to their third party Level 1 feed to not be snapshot based. If you are looking for an alternative data feed to use along with your TD Ameritrade account in NinjaTrader, you can check out this similar forum post below:Please let us know if you have any questions!

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