Don't think so maybe try getting in touch with Ismail to see if he plans on adding support soon

Thanks Tim. Is there a reason why there is no RegEx field in the standard upload? I've hardcoded one into a custom version in a View which seems to work partially but doesn't like files with capital letters as the file extension:

@model Umbraco.Forms.Mvc.Models.FieldViewModel

<input type="file" name="@Model.Name" id="@Model.Id"

@if(Model.Mandatory){<text> data-val="true" data-val-required="@Model.RequiredErrorMessage"</text>}

@if(Model.Mandatory){<text> data-val-regex="Invalid file type, only png, jpg and gif allowed" data-regex="^.+\.((jpg)|(gif)|(jpeg)|(png)|(JPG)|(GIF)|(JPEG)|(PNG))$"</text>}

/>

@if (!string.IsNullOrEmpty(Model.Value))

{

 <br />

 <a href="@Model.Value" target"_blank">Show current file</a>

 <input type="hidden" name="@{@Model.Name}_file" value="@Model.Value"/>

}

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