No, Ios5 has nothing to do with lockinfo. I'll explain. Notification Center is a pull down on the homescreen with info, weather, etc. The good jailbreak tweaks for notification center are jailbreak apps in Cydia. To add Notification Center only pops up on the Lockscreen when you get a text or missed phone call,etc. But nothing stays on the lockscreen like Lockinfo. You can not get weather on your lockscreen through ios5 and notification center like you can with Lockinfo. Tonefx is still useful. Ios5 offers new ringtones and new sms tones. But still doesn't have an option to creat anything but custom vibrations. So 3rd party apps like tonefx, bitesms, myxer, etc are still needed. The jailbroken SMS apps are still needed like irealsms,bitesms. You still have to exit out of your app to reply and send a text. Notifcation Center is cool little addition to ios5. But its still severely lacking. Lockinfo is far superior than Notification Center in non jailbroken form. Hope this helps explain. Wifi Sync is the only jailbroken app no longer needed in jailbroken form on ios5. Apple just seems to think a little addition like notification center is enough to make jailbreakers happy, lol. But it isn't.
Josh