In addition, I've answered a few questions below...
Are parameters still the same?
Of course. You won't have any need to update reports or other product configuration for out-of-the-box features.
Multitrack will continue to work as it used to for the most part. In fact it will work better.
More details on the great new multitrack features can be found in a separate post.
Generally the biggest change to multitrack is for customers using the "track all links" or dcsAll type code where all clicks, links, etc. on a page were tracked. For most, this was an undesirable overkill way of tracking specific links on a page that they didn't want to create individual multitrack events for. The new selector-based system of the v10.2 tag makes this far easier to track what you want with very little effort rather than the shotgun approach.
For customers that legitimately want the dcsAll, we're creating a simple plugin for the 10.2 that you can use.
What about reading the Webtrends meta parameters?
These will work as normal too. Many customers use these meta parameters as an easy way to track products, skus and other Webtrends features without creating any code, evars or or other manual coding steps.
These all use Webtrends meta names that start with WT, DCSext or DCS and are automatically found and passed in the Webtrends data collection of the 10.2 JS.
The only difference in the way10.2 handles the meta values is for adding additional custom meta tags to listen for. In the Webtrends JS, you register which meta tags you want to pass. In the past this was done using the dcsExt which has changed slightly:
Most customizations by far were multitrack related (custom events), meta tagging (products and custom parameters), or parameter based (WT params appended to URLs). These have all been addressed above and have favorable replacements in v10.2.
But some customers have obviously created clever and sophisticated customizations on their own. Naturally, you'll need to look closer at your other customizations before jumping onto 10.2. Talk to your account manager if you would like to have some consultants help you out.
As noted, the tag comes in both minimized and unminized versions. The unminimized tag is generally to support the readability and customization of the tag.