According to the search results, there are several new Kindle models available in 2023. Here are the most recent Kindle models mentioned in the search results:

• Kindle Paperwhite (2021)
• Kindle (2022)
• Kindle Scribe
• Kindle Paperwhite Signature Edition
• Kindle Oasis
• Kindle Kids Edition

Its worth noting that some of these models were released in previous years but are still considered some of the best Kindles available in 2023. Based on the search results, its difficult to determine which of these models is the newest. However, the most recent article from TechRadar mentions the Kindle (2022) and the Kindle Paperwhite Signature Edition as two of the best Kindles available in 2023.