@Neloc75: What are you getting this from? Literally copied from the announcement: "Testnet #4 will include an updated client and several more components of the final XTRABYTES network. Users can expect a substantial improvement in network performance (meaning even faster transactions and confirmations)."

More tech components of the final network - plus they've addressed they will roll the testnet into the mainnet - it won't be a sudden shift but a gradual process, so what's the problem? I'm not really seeing any of your "concerns" here...

Besides, a price drop is what a market does. It's not always related to the project itself, as we all know bitcoin influences everything (just take a look at the top 20 graphs at CMC)

First of all, you address this as the final testnet (#4) - we're still on 3 which relates to the post. Testnet #4 will (I think?) run on the main chain and is coming after this one.

Have you ever been involved in patents? What do you want them to say? "We're still writing and optimizing our texts"? - they're working on them, it takes time to get them perfect - deal with it.

have you ever bothered reading https://community.xtrabytes.global/threads/what-to-expect-of-testnet-3.437/ which was posted BEFORE this testnet?

https://www.reddit.com/r/CryptoCurrency/comments/7r4qay/xtrabytes_testnet_fun/?st=JCJM8L9O&sh=72c97d30

Have a look for some testnet results (not even close to being at full capacity)

This has been addressed multiple times already. A new wallet is being developed which will decrease the fees to a scalable amount (low data transactions will cost little, high data will cost more).