[UPDATE Aug 16, 07: This list is based on the beta documentation, for a complete list I suggest checking out the final documentation on livedocs.]

Below is a list of all the new attributes or attribute values for old tags in ColdFusion 8. This is in addition to the list of all new tags I posted and Andy Jarrett who posted a list of all the new functions in ColdFusion 8.

[UPDATE: Rahul Narula has an even better list of the new functions.]

Tag	New Attribute or Attribute Value
cfargument	type="component"
cfcomponent	implements serviceaddress plus, onMissingMethod
cfdocument	bookmark authPassword authUser proxyHost proxyPassword proxyPort proxyUser saveAsName userAgent scope variables: totalSectionPageCount and currentSectionPageNumber
cfdocumentSection	name authPassword authUser userAgent
cfdump	show hide keys output showUDFs
cfgrid	bind bindOnLoad pageSize preservePageOnSort stripeRows stripeRowColor format="HTML" (most of the new attributes are for this format)
cfinput	autoSuggest autoSuggestBindDelay autoSuggestMinLength delimiter maxResultsDisplayed showAutoSuggestLoadingIcon sourceForTooltip typeahead bindAttribute bindOnLoad onBindError type="datefield"
cfinvoke	refreshWSDL wsdl2java
cflocation	statusCode
cflock	scope="request"
cfloop	characters file array
cfmail	priority
cfobject	assembly port protocol secure type=".net", type="dotnet" (same thing) password proxyPassword proxyPort proxyServer proxyUser refreshWSDL userName wsld2JavaArgs wsPortName
cfquery	result structure now returns value of auto generated keys
cfreport	resourceTimespan style format="HTML || XML"
cfreportparam	chart query series style subreport
cfselect	bindAttribute bindOnLoad onBindError

Some very cool improvements in there especially looping over a file (and line by line without the whole file being put in memory), cfgrid html format updates, sorts and pages via AJAX, cfquery returning auto-generated keys and well I could go on and describe the rest of the improvements as well!