We have been expecting Android 4.4.3 for some time now, and we get some news about the new build numbers in server logs and bug reports.
According to the source, Android 4.4.3 is, going to be Focusing to Fix the Bugs. We are not expecring to see new features or UI changes because we think Google will release them for a more major release.
Given below is the The Android 4.4.3 changelog listed by Android Police.
• Frequent data connection dropout fix
• mm-qcamera-daemon crash and optimization fixes
• Camera focus in regular and HDR modes fixes
• Power Manager display wakelock fix
• Multiple Bluetooth fixes
• Fix for a random reboot
• App shortcuts sometimes got removed from launcher after update
• USB debugging security fix
• App shortcuts security fix
• Wi-Fi auto-connect fix
• Other camera fixes
• MMS, Email/Exchange, Calendar, People/Dialer/Contacts, DSP, IPv6, VPN fixes
• Stuck in activation screen fix
• Missed call LED fix
• Subtitle fixes
• Data usage graph fix
• Internet telephony fix
• FCC compliance fix
• Miscellaneous fixes
We think Google will start rolling out this update any-day so expect to see that.