“I’m pleased to announce the Zend Framework 1.8.0 release, the first in our 1.8 series of releases. This release marks the culmination of several long-standing projects, as well as a formalization of many of our recommended practices. There are two major stories in this release: first, the addition of several components designed to provide and promote Rapid Application Development; second, two offerings that make using Zend Framework in the cloud easier.” 
Some thoughts, in no particular order:
If you know Amazon S3 (Amazon Simple Storage Soluation, a web-service for storing and receiving files, scalable, fast, safe) then you should have a look at Zend_Service_Amazon_S3. The Zend Framework not only offers a nice object oriented implementation, but also provides a PHP Stream Wrapper. Why is this so nice? Because one could add Amazon S3 support to existing applications by simply prefixing any standard file-operation with ’s3://’. This is the code sample from the documentation:
<?php require_once 'Zend/Service/Amazon/S3.php'; $s3 = new Zend_Service_Amazon_S3($my_aws_key, $my_aws_secret_key); $s3->registerStreamWrapper("s3"); mkdir("s3://my-own-bucket"); file_put_contents("s3://my-own-bucket/testdata", "mydata"); echo file_get_contents("s3://my-own-bucket/testdata");
“Amazon EC2 provides a web service to allow launching and managing server instances within Amazon’s data centers. These server instances may be used at any time for any length of time — allowing you to scale your site only when you need to handle extra traffic, or run your services entirely from the EC2 platform.” 
Zend Framework jumped the train for “the” cli interface to the framework via Zend_Tool. One could create whole projects, models, controllers, views with it. This makes sense for starters imho. My full featured Zend Studio for Eclipse with customized code templates does this job way better for me. One thing i miss (Agavi has it! ^^) is a phpunit interface and some configuration which tests should be run. In my opinion, just the existance of such an option would encourage more users to think about/actually use unit tests.
Routing now supports translation aware routes, and route chaining capabilites. Those are fetures i know and love from Agavi.
There are loads of other new features (see ), which I haven’t checked yet – sometimes simply because they didn’t interest me.
I’m curious if switching our main project on monday to ZF 1.8.0 will break any test ^^.
 Zend Developer Zone: Zend Framework 1.8.0 Released