No. The new one is not available yet. If you want the new Nexus 10 2, you should wait till it is released(very soon) and order it directly from the Google play store. Ordering directly from Google should be the fastest way. I ordered the new nexus 5 from Google the day it was released and had it in my hand that week.
It has a micro USB, not mini. You can use that to connect to PC or you could use a file explorer system to wireless transfer data both ways: tablet 2 pc; PC 2 tablet when on a Wi-Fi provider. It does have bluetooth capabilities.
No. There is no SD slot. I purchased the 32gb Nexus 10. If you want additional storage, you can purchase a Wi Drive. I purchased a 128 GB Wi Drive and it works great. You can use it with WiFi or Bluetooth.
Did this happen as soon as you turned it on? Or after you installed an app? Try booting to safe mode ( 1.Ensure your device's screen is on, then press & hold the Power button. 2.Touch & hold the Power off option in the dialog box. 3.Touch OK in the following dialog to start safe mode). If it persists, contact Nexus Help - 855-836-3987 (which can be found by going to support'dot'google'dot'com'slash'nexus).
Wi-fi is wireless Internet so wi-fi only means you cannot use a cell phone signal to access the Internet on the tablet you can only access the Internet when you have access to wireless Internet connection.