Found 6th May 2016
update - includes other networks also (check with your provider)
Vodafone have now recently announced that they are introducing FREE EU INCLUSIVE ROAMING in 40 counties for all NEW and UPGRADING customers on their RED Plans. (Similar to Three's Feel at Home which cover 19 EU destinations, however this includes 40 nations).
The new bundles will have unlimited roaming calls, texts and picture messages with a generous monthly data allowance of up to 4GB also included, all of which can be enjoyed from Norway to Turkey and almost everywhere in between.
Data however is capped at and the restriction will vary depending on your plan, but by way of example, an 8GB Red Value bundle will give you 2GB of inclusive data, while a 12GB Red Value plan gives you 4GB of data.
List of countries will be noted below. Enjoy!
Only applies to new customers from today. 6/5/16
Existing customers are excluded.
... And upgrading customers from today
I've been in contact with Vodafone who have said they have no set release date for roaming. In other words according to CS, their manager and their manager, no date is confirmed or decided if they will implement these changes. I was told over the phone on 3/5/16 that these changes would take effect, but there is no official confirmation.
I have recorded my call when I signed, so I have evidence. Recording someone's call, especially a business is entirely legal. My advice is never to agree to a contract without recording the call.