An adjective or a single word that means something is "new" and "different" at the same time

When we say this approach is "New," new, here, doesn't necessarily imply that the approach is different from preceding approaches.

When we say that it is "different," different, here, doesn't imply that it is new.

So is there an adjective or a word that could denote both meanings?

Here is the context:

to unravel .......... reasons and motivations.

Solution 1:

novel - of a new kind; different from anything seen or known before (dictionary.com)

Solution 2:

innovative

adjective

1.0 (Of a product, idea, etc.) featuring new methods; advanced and original:

1.1 (Of a person) introducing new ideas; original and creative in thinking:
ODO Emphasis mine

Solution 3:

fresh

• new; not previously known, met with, etc.