Currently I'm using Jasper reports 6.0.1 and iText 5.5.0. I need to move to Jasper 6.7.0 but I'm not sure if this is compatible with my current iText version.
Is there somebody that can help me with this query?
Yes. Further info on itext licensing.
Jaspersoft in earlier 6.x version had a license agreement with iText to bundle itext 5.x, but it ended when Jaspersoft were bought out. So they reverted back to itext 2.1.7 based customized version. iText changed some package and class names in 5.x when they became corporate.