There's not much to say on the Viber update, but City Art Search's changelog does mention that some artwork has been added to the database in addition to the bug fixes.
And there you have it. If you'd like to snag the updates for yourself, you can get City Art Search version 184.108.40.206 and Viber version 4.5.2 from the store links below. Also, be sure to shout out in the comments below if you notice anything new or noteworthy.
Thanks to everyone who sent in tips!