Just read an excellent essay:
Thomas G. Weinandy, O.F.M. Cap., "The Apostolic Christology of Ignatius of Antioch: The Road to Chalcedon", pp. 71-85 in Andrew Gregory and Christopher Tuckett, eds., The New Testament and the Apostolic Fathers: Trajectories through the New Testament and the Apostolic Fathers (amazon.com), Oxford University Press: London, 2005.
In reading through Ignatius recently, I'd noticed many of the items that Weinandy brings to light, but the way he strings them together makes a convincing case that Ignatius' Christology, in those very early years (early 2nd century), can be seen as seeds of what ends up in the statement of the Council of Chalcedon (Greek and English available here).
Weinandy has three major sections of the article, the first centering on Ignatius' representation of the divinity of Christ; the second focusing on Ignatius' representation of the humanity of Christ. The third section, on the oneness of Christ, puts it all together and paints a pretty decent picture of Ignatius essentially hewing to the both fully God and fully man description of Christ's nature.
He also brings to light Ign. Eph. 1.1, which has a very interesting turn of phrase:
1.1 Ἀποδεξάμενος ἐν θεῷ τὸ πολυαγάπητόν σου ὄνομα, ὃ κέκτησθε φύσει δικαίᾳ κατὰ πίστιν καὶ ἀγάπην ἐν Χριστῷ Ἰησοῦ τῷ σωτῆρι ἡμῶν· μιμηταὶ ὄντες θεοῦ, ἀναζωπυρήσαντες ἐν αἵματι θεοῦ τὸ συγγενικὸν ἔργον τελείως ἀπηρτίσατε·
Holmes, M. W. (1999). The Apostolic Fathers : Greek texts and English translations (Updated ed.) (136). Grand Rapids, Mich.: Baker Books.
1. I welcome in God your well-beloved name which you possess by reason of your righteous nature, which is characterized by faith in and love of Christ Jesus our Savior. Being as you are imitators of God, once you took on new life through the blood of God you completed perfectly the task so natural to you.
Holmes, M. W. (1999). The Apostolic Fathers : Greek texts and English translations (Updated ed.) (137). Grand Rapids, Mich.: Baker Books.
The phrase "through the blood of God" is striking and, to my knowledge (off the top of my head; no searches done), unparalleled in literature previous to this point. Of it, Weinandy writes:
This phrase ... is an arresting alignment of seemingly clashing words with their seemly (sic?) irreconcilable meanings ('blood' and 'God') that accentuates the reality of the Incarnation; that is, only if the divine Son of God did actually become man and so exist as an, does such an alignment make theological sense and possess any literal meaning. (Weinandy 81)
All this to say, I've been very pleased with my recent purchase of the 2-volume NTAF set (amazon.com) (thanks to some birthday money and Amazon.com commissions, thanks to all who click through links and buy!) and can highly recommend it.